In the video, the water level was 15 milliliters before adding
the chain, and 20 milliliters after adding the chain. When I
weighed the chain, its mass was 77.3 grams.
I believe the chain is solid metal (not gold plated), but is
probably a blend of gold and other metals. I looked up that gold
has a density of 19.3 g/ml, while the other metals like silver and
copper usually blended with gold have a combined density of about
9.7 g/ml.
Determine what percentage of the chain is gold, by mass, to at
least 1 decimal place?
%
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